Hoe.



E. ARNOLD.

HOE.

APPLICATION FILED APR.10. 19M.

Patented May 18, 1915.

Jaezr/onigz esses- ORR-'5 PE 0.. PHOTC-LITHO.. WASHINGTON. u C.

EBICI-I ARNOLD, OF BERLIN, GERMANY.

HOE.

Specification of Letters Patent.

Patented May 18, 1915.

Application filed April 10, 1914. Serial No. 830,949.

To all whom it may concern:

Be it known that I, Enron ARNOLD, a subject of the German Emperor, and resident of Berlin, Germany, have invented certain new and useful Improvements in Hoes, of which the following is a specification.

This invention relates to an improved hoe, of the kind having a detachable blade which can be clamped fast in the neck of the hoe.

The accompanying drawing shows the improved hoe.

Figure 1 is a sectional side view of one form, and Fig. 2 a fragmentary end view of the same; Fig. 3 is a sectional side view of a modified form, and Fig. 4: a fragmentary end view of the same.

The attachment or fastening of the blade to the neck of the hoe was hitherto effected by means of screws or wedges. These constructions have the drawback that the screws and wedges got frequently lost during the use of the implement. An improvement in the fastening of hoe blades was then created by forming the hoe neck itself as a wedge and inserting the same into corresponding wedge-eyes of the blade. But to this construction the drawback occurs that the wedge-eyes could not be punched out of sheet-steel without difiiculty and the material at the edges of the shearing points was torn, so that the hoe neck of the same got loose during use of the implement and the blade was lost. Finally, fastening contrivances have been proposed, in which 'the blade is secured by frictional contact with the hoe neck only.

The present invention relates to such a frictional fastening device, in which however the friction is increased by pressing the upper end of the blade into an inclined groove in the hoe neck and thus tensioning the blade.

Copies of this patent may be obtained for five cent The blade forms thus a wedge, whereby it is automatically held in place.

When using such hoes, the blade is always pressed firmer into the hoe neck and can thus not be lost.

The end of the socket 1 (Fig. 1), which serves for the reception of a handle, carries an outer tongue 2, which is passed through a square hole 3 in the blade 4 and adapted to bear against the outer side 6 of the latter. The butt-bearing 5 of the hoe neck bears then at the same time against the other side 7 of the blade. The projection. 8 forms a groove 9, which is inclined at a trifling angle toward the plane of the blade and into which the upper part of the blade is shifted until the rounded edge of the same strikes against the incline of the groove and presses the blade against the two adjacent surfaces of the projection 2 and butt-bearing 5, whereby the blade is completely clamped fast.

Another constructional form is shown in Figs. 3 and 4:, in which the tongue 2 is arranged on the inner side of the hoe neck and the blade 4 is inserted from this side, while the butt-bearing 5 is omitted. The inclined groove 9 has in this arrangement its incli- 4 nation angle oppositely directed to that shown in Fig. 1.

What I claim, is:-

The combination of a hoe neck having an inclined groove in its front end, butt-bearings on said neck, one to face said groove and the other below the latter, and a blade having a recess, through which the latter butt-bearing is passed, held by said buttbearings and firmly clamped into frictional contact with the incline of said groove, substantially as and for the purpose set forth.

ERICH ARNOLD.

Witnesses:

WOLDEMAR HAUPT, HENRY HASPER.

5 each, by addressing the Commissioner of Patents,

Washington, D. G. 

